Facebook Smart Button - Shares missing

All of the shares used on my Facebook Smart Button have completely disappeared, as though nothing had ever been shared via this button on Facebook by my readers. My most recent post alone had over 120 shares logged and showing up on the Facebook smart button, now they are all gone, and they are also missing from every post on my blog.

In other words, according to the Facebook smart button, none of these posts have ever been shared on Facebook, but this is not accurate. Any insight would be appreciated. I don't know what happened to those shares, but they are gone.